I have WM5 pocket PC can talk clearly with windows XP in pjsip 1.0.1, But the sound quality is very bad in WM6.1 which runs the same WM5 image. The WM6.1 is able to heard clearly from windows XP, but windows XP just heard metallic noise from WM6.1. The WM6.1 is AT&T LG INCITE CT810 over wifi or 3G. I tested may SIP voip software on this AT&T Incite and all have the same issue. Only SKYPE does not have the sound problem on this AT&T WM6.1. I am wondering whether I have to build pjsip 1.0.1 with WM6.0 sdk in order to run in WM6 pocket PC. Regrads, -fcch -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20091021/f3c70c06/attachment.html>